JPG to PDF converter,
set the PDF size in KB
Combine one or many images into a single PDF and hit an exact target — jpg to pdf below 100KB, 80KB, 150KB, or any custom KB. Everything runs in your browser.
Need the images smaller first? Use the image compressor to hit a KB limit, or the image converter to turn HEIC or PNG into JPG before you build the PDF.
Kodotools Team · Last updated: January 2026 · Files stay on your device
About this tool
A free, browser-based JPG to PDF converter that lets you set the final PDF size in kilobytes — built for forms and portals that reject anything over a fixed limit. No file ever leaves your device.
Who needs this?
- Anyone told to upload a PDF below 100KB, 80KB, or 500KB
- People merging several photos or scans into one PDF
- Students and applicants attaching documents to a form
Drop your JPG images here
or click to browse · add as many as you like
Reading your images
Loading the selected files locally. This can take a moment for large photos.
0 images ready
Drag to reorder — page order follows the list.
Preview
How each page will look in the PDF
Target PDF size
How JPG to PDF at an exact KB works
A PDF made from photos is basically a wrapper around the images inside it, so the file size is decided almost entirely by those images. To convert a JPG to PDF below 100KB, the tool re-encodes each image at a lower JPEG quality — and, if needed, scales it down — until the whole PDF lands under your target. Everything is measured in your browser, so you get the real file size before you download.
Add your images
Drop one JPG or many. Reorder them so the pages come out in the right sequence.
Set the target
Pick a page size and a KB limit — below 100KB, 80KB, 150KB or your own number.
Convert & download
Hit convert. See the final size, then download your PDF. Done.
Why set the PDF size in KB?
Most "convert jpg to pdf" tools give you whatever file size they feel like. That fails the moment a portal caps uploads at a fixed number. Setting the size in KB is what turns a generic converter into something you can actually submit.
- Job & government forms: many require a document PDF under 100KB, 150KB, or 300KB.
- Visa & university portals: common ceilings are 300KB, 400KB, 450KB and 500KB.
- Very strict uploads: some ask for a JPG to PDF at 80KB or even below — this tool can hit those too.
- Email & chat limits: a smaller PDF sends faster and won't bounce on attachment caps.
Kodotools vs typical JPG-to-PDF sites
| Feature | Kodotools | Typical online tools |
|---|---|---|
| Exact KB target | Yes — type any KB | Rarely — fixed output |
| Files uploaded to a server | Never — 100% browser | Usually yes |
| Multiple images in one PDF | Yes, reorderable | Sometimes |
| Signup / watermark | Free, no signup | Varies |
Tips for a small, readable PDF
Keep text legible at 80KB
For a scanned document, crop out empty margins before converting — the tool then spends the KB budget on the text, not blank space, so a JPG to PDF at 80KB stays readable.
A4 vs "fit to image"
Choose A4 or Letter when a form expects a standard page. Use Fit to image for photos, ID cards, or receipts where you don't want white borders.
Very small targets
A busy, colourful photo can't always reach a tiny limit without going blurry. If the PDF stays above target, the tool tells you and gives you the smallest version it could make.
Compress the image first
Starting from a huge phone photo? Run it through the image compressor first for the cleanest result at strict limits.
FAQ
Common questions
How do I convert JPG to PDF below 100KB?
Add your JPG, choose the Below 100 KB target (or type 100), then hit Convert to PDF. The tool re-compresses the image until the finished PDF is under 100KB and shows you the exact size before you download.
Can I choose the final PDF size in KB?
Yes — that's the whole point. Use a preset like 80KB, 150KB, 300KB, 450KB or 500KB, or type any custom KB value. The converter aims to get as close as possible to your target without going over it.
Can I combine multiple JPG images into one PDF?
Absolutely. Drop or select several images and each becomes its own page. Drag the items in the list to set the page order, then convert them all into a single PDF.
Will the image quality reduce after conversion?
Only as much as your target requires. With No limit selected, images are embedded at high quality. When you set a tight KB target, quality is lowered just enough to fit — the smaller the target, the more visible the change.
Are my files uploaded to a server?
No. The entire JPG to PDF conversion happens locally in your browser with JavaScript. Your images and the PDF never leave your device.
Which image formats can I use?
JPG, JPEG, PNG and WebP. iPhone HEIC photos? Convert them with the HEIC to JPG tool first, then bring the JPGs here.
Does it work on a phone?
Yes. It runs in Android and iOS browsers, so you can turn photos into a sized PDF straight from your phone.
Is this JPG to PDF converter free?
Completely. No account, no watermark, no page or usage limits. Files stay on your device.
Guides
Real use-cases, step by step
Practical walk-throughs for the most common forms with strict size limits.
Ready to convert JPG to PDF?
Jump back to the tool, set your KB target, and download your PDF in one pass.
Convert to PDF →